EP2467618B1 - Multi-ratio transmission - Google Patents

Multi-ratio transmission Download PDF

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Publication number
EP2467618B1
EP2467618B1 EP20100745233 EP10745233A EP2467618B1 EP 2467618 B1 EP2467618 B1 EP 2467618B1 EP 20100745233 EP20100745233 EP 20100745233 EP 10745233 A EP10745233 A EP 10745233A EP 2467618 B1 EP2467618 B1 EP 2467618B1
Authority
EP
European Patent Office
Prior art keywords
gear
planetary gear
shaft
clutch
transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP20100745233
Other languages
German (de)
French (fr)
Other versions
EP2467618A1 (en
Inventor
Gerhard Gumpoltsberger
Christian Sibla
Stefan Beck
Josef Haupt
Gert Bauknecht
Peter Ziemer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE102009028709A priority Critical patent/DE102009028709A1/en
Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Priority to PCT/EP2010/062129 priority patent/WO2011020897A1/en
Publication of EP2467618A1 publication Critical patent/EP2467618A1/en
Application granted granted Critical
Publication of EP2467618B1 publication Critical patent/EP2467618B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H3/00Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/62Gearings having three or more central gears
    • F16H3/66Gearings having three or more central gears composed of a number of gear trains without drive passing from one train to another
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H3/00Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H2003/447Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion without permanent connection between the set of orbital gears and the output
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H2200/00Transmissions for multiple ratios
    • F16H2200/003Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0065Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising nine forward speeds
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H2200/00Transmissions for multiple ratios
    • F16H2200/20Transmissions using gears with orbital motion
    • F16H2200/2002Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
    • F16H2200/2012Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with four sets of orbital gears
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H2200/00Transmissions for multiple ratios
    • F16H2200/20Transmissions using gears with orbital motion
    • F16H2200/203Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2046Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with six engaging means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H2200/00Transmissions for multiple ratios
    • F16H2200/20Transmissions using gears with orbital motion
    • F16H2200/2097Transmissions using gears with orbital motion comprising an orbital gear set member permanently connected to the housing, e.g. a sun wheel permanently connected to the housing

Description

  • The present invention relates to a planetary gear multi-speed transmission, in particular an automatic transmission for a motor vehicle, according to the preamble of patent claim 1.
  • Automatic transmissions, in particular for motor vehicles, comprise in the prior art planetary gear sets which are switched by means of friction elements such as clutches and brakes, and usually with a slipping action and optionally with a lock-up starting element, such as a hydrodynamic torque converter or a fluid coupling connected.
  • Such an automatic transmission is for example from the DE 199 49 507 A1 known to the applicant; Here, two non-shiftable Vorschaltradsätze are provided on the output side, the output side generate two speeds that are selectively switchable in addition to the speed of the drive shaft to a force acting on the output shaft, switchable Doppelplanetenradsatz by selectively closing the switching elements used that to switch from a gear in the respective next higher or lower gear from the two currently operated switching elements only one switching element must be switched on or off.
  • Using five shifting elements, seven forward gears are achieved, with nine or ten forward gears using six shifting elements.
  • Furthermore, from the DE 102 13 820 A1 a multi-speed automatic transmission with eight forward gears and one reverse gear, comprising a first input path T1 of a first gear ratio; an input path T2 having a larger gear ratio than this input path T1; a planetary gear set of the type Ravigneaux with four elements, the four elements a first element, a second element, a third element and a fourth element are in the order of the elements in a speed diagram; a clutch C-2 which transmits rotation of the input path T2 to the first element S3; a clutch C-1 which transmits the rotation from the input path T2 to the fourth element S2; a clutch C-4 which transmits a rotation from the input path T1 to the first element; a clutch C-3 which transmits the rotation from the input path T1 to the second element C3; a brake B-1 which establishes the engagement of the fourth element; a brake B-2 which makes the engagement of the second member; and an output element coupled to the third element S3.
  • A 9-speed multi-speed transmission is also from the DE 29 36 969 A1 known; it comprises eight shift elements and four sets of wheels, one wheel set serves as a Vorschaltgetriebe and the main gear has a Simpson set and another serving as a reverse gear wheelset.
  • Further multi-speed transmissions are for example from the DE 102005010210 A1 and the DE 102006006637 A1 the applicant known.
  • Automatically switchable vehicle transmissions in planetary construction in general are already widely described in the prior art and are subject to permanent development and improvement. So these transmissions require a low construction cost, in particular a small number of switching elements and avoid sequential switching double circuits, so that in circuits in defined gear groups only one switching element is changed.
  • From the not yet published DE 102008000428.3 The applicant is a planetary gear multi-speed transmission known which has a drive and an output, which are arranged in a housing. In the known transmission at least four planetary gear sets, hereinafter referred to as the first, second, third and fourth planetary gear set, at least eight rotatable shafts - hereinafter as drive shaft, output shaft, third, fourth, fifth, sixth, seventh and eighth Shaft - and at least six switching elements, including brakes and clutches, provided, the selective intervention causes different ratios between the drive and the output, so that preferably nine forward gears and one reverse gear can be realized.
  • Here, the first and the second planetary gear set, which are preferably designed as minus planetary gear sets, form a switchable transfer gearset, wherein the third and the fourth planetary gear set form a main gearset.
  • In the known multi-speed transmission is provided that the webs of the first and second planetary gear sets are coupled to each other via the fourth shaft, which is connected to an element of the main gearset that the ring gear of the first planetary gear set coupled to the sun gear of the second planetary gear set on the eighth wave is, which is releasably connectable via a first clutch to the drive shaft and that the sun gear of the first planetary gear by means of the third shaft via a first brake to a housing of the transmission is coupled and releasably connectable via a second clutch to the drive shaft, wherein the ring gear of second planetary gear set can be coupled by means of the fifth shaft via a second brake to a housing of the transmission. In addition, the seventh shaft with at least one element of the main gearset is constantly connected and coupled via a third brake to a housing of the transmission, the sixth shaft is continuously connected to at least one further element of the main gear and releasably connected via a third clutch to the drive shaft; the output shaft is permanently connected to at least one further element of the main gearset.
  • Preferably, in the known transmission, the fourth shaft is constantly connected to the ring gear of the third planetary gear set, wherein the sixth shaft is constantly connected to the ring gear of the fourth planetary gear set and the web of the third planetary gear set and releasably connectable via the third clutch to the drive shaft. Further, the seventh shaft is constantly connected to the sun gears of the third and fourth planetary gear set and can be coupled via the third brake to a housing of the transmission. The output takes place here via the output shaft permanently connected to the web of the fourth planetary gearset. Furthermore, the third and the fourth planetary gear set to be a Ravigneaux set with a common web and a common ring gear or reduced.
  • The present invention has for its object to propose a multi-speed transmission of the type mentioned, which has nine forward gears and at least one reverse gear with sufficient translation, in which the construction cost and size, in particular the overall length, or the weight can be optimized and also the efficiency is improved in terms of drag and gearing losses. In addition, in the multistage transmission according to the invention, small supporting moments act on the shifting elements. In particular, the transmission according to the invention should be suitable for a front-transverse construction.
  • This object is achieved by the features of claim 1. Further advantages and advantageous embodiments will become apparent from the dependent claims.
  • Accordingly, a multi-speed transmission according to the invention is proposed in planetary construction, which has a drive and an output, which are arranged in a housing. Furthermore, at least four planetary gear sets, hereinafter referred to as the first, second, third and fourth planetary gear set, eight rotatable shafts - hereinafter referred to as drive shaft, output shaft, third, fourth, fifth, sixth, seventh and eighth shaft - and at least six switching elements, comprising brakes and clutches, provided whose selective engagement causes different ratios between the drive and the output, so that preferably nine forward gears and one reverse gear can be realized.
  • The planetary gear sets are arranged axially in the order of the first planetary gearset, second planetary gearset, third planetary gearset, fourth planetary gearset and are preferably designed as minus planetary gear sets.
  • A simple minus planetary set includes known a sun gear, a ring gear and a web on which planet gears are rotatably mounted, each with Combine sun gear and ring gear. In this way, the ring gear at a fixed web on a sun gear opposite direction of rotation. In contrast, a simple plus-planetary gearset includes a sun gear, a ring gear and a web on which inner and outer planetary gears are rotatably mounted, wherein all inner planetary gears mesh with the sun gear and all outer planetary gears with the ring gear, each inner planetary gear, each with an outer Planet wheel meshes. As a result, the ring gear has the same direction of rotation when holding the web as the sun gear.
  • According to a preferred embodiment of the invention, the sun gear of the first planetary gear set is connected to the drive shaft, wherein the web of the first planetary gear set is connected to the third shaft, which can be coupled via a first brake to a housing of the transmission and via a second clutch to the fifth shaft is releasably connectable, wherein the fifth shaft is connected to the ring gear of the second planetary gear set, the sun gear of the third planetary gear set and the sun gear of the fourth planetary gear set and the drive shaft is connected to the web of the fourth planetary gearset.
  • Furthermore, the ring gear of the first planetary gear set is connected to the sixth shaft, which is connected to the web of the second planetary gear set, wherein the ring gear of the third planetary gear set is coupled to a housing of the transmission, wherein the sun gear of the second planetary gear set is connected to the fourth shaft , which is coupled via a second brake to a housing of the transmission and wherein the output shaft via a third clutch with the connected to the ring gear of the fourth planetary gear set seventh shaft and a fourth clutch with the connected to the web of the third planetary gear set eighth shaft detachably connectable is.
  • It is provided that the first planetary gear set is blockable by closing a first clutch, wherein preferably the first clutch is designed as a coupling which removably connects the third shaft to the drive shaft or is designed as a coupling which releasably detach the third shaft with the sixth shaft combines.
  • The inventive design of the multi-speed transmission results in particular for passenger cars suitable translations and increased total spread of the multi-speed transmission, whereby an improvement in ride comfort and a significant consumption reduction can be effected.
  • In addition, the construction cost is considerably reduced with the multi-stage transmission according to the invention by a small number of switching elements. Advantageously, it is possible with the multistage transmission according to the invention to carry out a start with a hydrodynamic converter, an external starting clutch or other suitable external starting elements. It is also conceivable to allow a starting operation with a start-up element integrated in the transmission. Preferably, a switching element which is actuated in the first forward gear and in reverse is suitable.
  • Furthermore, in the multistage transmission according to the invention a good efficiency in the main gears with respect to the drag and gear losses.
  • Furthermore, there are small moments in the switching elements and in the planetary gear sets of the multi-speed transmission, whereby the wear in the multi-speed transmission is advantageously reduced. In addition, a correspondingly small dimensions are made possible by the low moments, whereby the required space and the corresponding costs are reduced. In addition, there are also low speeds in the waves, the switching elements and the planetary gear sets.
  • In addition, the transmission according to the invention is designed such that an adaptability to different drive train configurations is made possible both in the power flow direction as well as in space.
  • The invention will be explained in more detail below by way of example with reference to the attached figures. These are:
  • FIG. 1:
    A schematic view of a first preferred embodiment of a multi-speed transmission according to the invention;
    FIG. 2:
    A schematic view of a second preferred embodiment of a multi-speed transmission according to the invention; and
    FIG. 3:
    An exemplary circuit diagram for a multi-speed transmission according to FIG. 1 ,
  • In FIG. 1 is a multi-stage transmission according to the invention with a drive shaft 1, an output shaft 2 and four planetary gear sets P1, P2, P3 and P4 shown, which are arranged in a housing G. The planetary gear sets P1, P2, P3 and P4 are in the in FIG. 1 shown example designed as a minus planetary gear sets. According to the invention, at least one planetary gear set can be designed as a plus planetary gear set, if at the same time the web and Hohlradanbindung exchanged and the amount of stationary translation is increased by 1 compared to the design as a minus planetary gear set.
  • In the embodiment shown, the planetary gear sets are arranged axially in the order P1, P2, P3, P4.
  • How out FIG. 1 can be seen, six switching elements, namely two brakes 03, 04 and four clutches 13, 27, 28 and 35 are provided. The spatial arrangement of the switching elements can be arbitrary and is limited only by the dimensions and the external shape. The clutches and the brakes of the transmission are preferably designed as Reibschaltelemente or lamellar switching elements.
  • With these switching elements a selective switching of nine forward gears and one reverse gear can be realized. The multi-speed transmission according to the invention has a total of eight rotatable shafts, namely the waves 1, 2, 3, 4, 5, 6, 7 and 8, wherein the drive shaft forms the first shaft and the output shaft, the second shaft of the transmission.
  • According to the invention in the multi-stage transmission according to FIG. 1 provided that the sun gear of the first planetary gear set P1 is connected to the drive shaft 1, wherein the web of the first planetary gear set P1 is connected to the third shaft 3, which can be coupled via a first brake 03 to a housing G of the transmission, via a first clutch thirteenth with the drive shaft 1 and via a second clutch 35 with the fifth shaft 5 is releasably connectable. By closing the first clutch 13, the first planetary gear set P1 can be blocked by coupling the sun gear with the web.
  • How out FIG. 1 it can be seen, the fifth shaft 5 is connected to the ring gear of the second planetary gear set P2, the sun gear of the third planetary gear set P3 and the sun gear of the fourth planetary gear set P4, wherein the drive shaft 1 is connected to the web of the fourth planetary gear set P4.
  • According to the invention the ring gear of the first planetary gear set P1 is connected to the sixth shaft 6, which is connected to the web of the second planetary gear set P2, wherein the ring gear of the third planetary gear set P3 is coupled to a housing G of the transmission (shaft 0) and wherein the sun gear of the second planetary gear set P2 is connected to the fourth shaft 4, which can be coupled via a second brake 04 to a housing G of the transmission; the output shaft 2 is releasably connectable in the embodiment shown via a fourth clutch 28 with the eighth shaft 8 connected to the web of the third planetary gear set P3 and releasably connectable via a third clutch 27 to the seventh shaft 7 connected to the ring gear of the fourth planetary gear set P4.
  • According to the invention, the first clutch 13 and the second clutch 35 may be arranged axially between the first and second planetary gear sets P1, P2. The third clutch 27 and the fourth clutch 28 may, viewed axially, preferably be arranged between the third and the fourth planetary gear set P3, P4.
  • This in FIG. 2 The embodiment shown differs from the exemplary embodiment FIG. 1 in that the first clutch is designed as a clutch 36 is, via which the third shaft 3 with the sixth shaft 6 is detachably connectable, so that the blocking of the first planetary gear set P1 can be done by coupling the web of the first planetary gear set P1 with the ring gear of the first planetary gear set P1.
  • In FIG. 3 is an exemplary circuit diagram of a multi-speed transmission according to FIG. 1 shown. For each gear three switching elements are closed. The shift scheme, the respective ratios of the individual gear ratios i and the step to be determined therefrom or increments phi are taken to the next higher gear example, the value of 8,999 represents the spread of the transmission.
  • Typical values for the stationary ratios of the planetary gear sets P1, P2, P3 and P4, which are designed as minus planetary gear sets, are -1.953, -2.191, -2.235 and -2.404, respectively. Out FIG. 3 It can be seen that in the case of sequential switching, double circuits or group circuits are avoided since two adjacent gear stages share two switching elements. Further, it will be seen that a large spread is achieved with small gear jumps.
  • The first forward gear is obtained by closing the second brake 04 and the second and fourth clutches 35, 28, the second forward gear by closing the first, second and fourth clutches 13, 35, 28, the third forward gear by closing the second brake 04 and the first and fourth clutches 13, 28, the fourth forward gear by closing the second brake 04 and the third and fourth clutches 27, 28, the fifth forward gear by closing the second brake 04 and the first and Third clutch 13, 27, preferably designed as a direct gear sixth forward gear by closing the first, second and third clutch 13, 35, 27, the seventh forward gear by closing the second brake 04 and the second and third clutch 35, 27th , the eighth forward gear by closing the first brake 03 and the second and third clutches 35, 27 and the ninth forward gear is obtained by closing the first and second brakes 03, 04 and the third clutch 27, wherein the reverse gear by closing the first and second brakes 03, 04 and the fourth clutch 28 results.
  • Characterized in that in the first forward gear and in reverse, the second brake 04 and the fourth clutch 28 are closed, these switching elements can be used as starting elements.
  • In the event that according to the embodiment of FIG. 2 the first clutch is designed as a coupling 36, via which the third shaft 3 with the sixth shaft 6 is detachably connectable, the gears corresponding to the result in FIG. 3 shown circuit diagram with the difference that the reference numeral 13 is replaced by the reference numeral 36.
  • According to the invention, different gear jumps may result even with the same transmission scheme depending on the switching logic, so that an application- or vehicle-specific variation is made possible.
  • According to the invention, it is possible to provide additional freewheels at any suitable location of the multi-speed transmission, for example between a shaft and the housing or, if necessary, to connect two shafts.
  • On the drive side or on the output side, an axle differential and / or a distributor differential can be arranged according to the invention.
  • In the context of an advantageous development, the drive shaft 1 can be separated by a coupling element of a drive motor as needed, with a hydrodynamic converter, a hydraulic clutch, a dry starting clutch, a wet starting clutch, a magnetic powder clutch or a centrifugal clutch can be used as a coupling element. It is also possible to arrange such a starting element in the power flow direction behind the transmission, in which case the drive shaft 1 is permanently connected to the crankshaft of the engine.
  • The multistage transmission according to the invention also allows the arrangement of a torsional vibration damper between the engine and transmission.
  • In a further, not shown embodiment of the invention, on each shaft, preferably on the drive shaft 1 or the output shaft 2, a wear-free brake, such. a hydraulic or electric retarder or the like, be arranged, which is particularly important for use in commercial vehicles of particular importance. Furthermore, to drive additional units on each shaft, preferably on the drive shaft 1 or the output shaft 2, a power take-off may be provided.
  • The friction shift elements used can be designed as a load-shifting clutches or brakes. In particular, non-positive clutches or brakes, such as e.g. Multi-plate clutches, band brakes and / or cone clutches are used.
  • Another advantage of the multistage transmission presented here is that an electric machine can be mounted on each shaft as a generator and / or as an additional drive machine.
  • Of course, also falls any constructive training, especially any spatial arrangement of the planetary gear sets and the switching elements in itself and to one another and as far as technically feasible, within the scope of the present claims without affecting the function of the transmission, as indicated in the claims, also if these training are not explicitly shown in the figures or in the description.
  • reference numeral
  • 1
    first shaft, drive shaft
    2
    second shaft, output shaft
    3
    third wave
    4
    fourth wave
    5
    fifth wave
    6
    sixth wave
    7
    seventh wave
    8th
    eighth wave
    03
    first brake
    04
    second brake
    13
    first clutch
    27
    third clutch
    28
    fourth clutch
    35
    second clutch
    36
    first clutch
    P1
    first planetary gear set
    P2
    second planetary set
    P3
    third planetary set
    P4
    fourth planetary set
    i
    translation
    phi
    increment
    G
    casing

Claims (4)

  1. Multi-stage transmission of planetary type of construction, in particular automatic transmission for a motor vehicle, comprising a drive input shaft (1), a drive output shaft (2) and four planetary gear sets (P1, P2, P3, P4), which are arranged in a housing (G), a total of eight rotatable shafts (1, 2, 3, 4, 5, 6, 7, 8) and at least six shift elements (03, 04, 13, 27, 28, 35, 36), comprising brakes (03, 04) and clutches (13, 27, 28, 35, 36), the selective engagement of which results in different transmission ratios between the drive input shaft (1) and the drive output shaft (2) such that nine forward gears and one reverse gear can be realized, wherein the sun gear of the first planetary gear set (P1) is connected to the drive input shaft (1), wherein the web of the first planetary gear set (P1) is connected to the third shaft (3) which can be coupled via a first brake (03) to a housing (G) of the transmission and which can be releasably connected via a second clutch (35) to the fifth shaft (5), wherein the fifth shaft (5) is connected to the internal gear of the second planetary gear set (P2), to the sun gear of the third planetary gear set (P3) and to the sun gear of the fourth planetary gear set (P4), and the drive input shaft (1) is connected to the web of the fourth planetary gear set (P4), wherein the sixth shaft (6) is connected to the internal gear of the first planetary gear set (P1) and to the web of the second planetary gear set (P2), wherein the sun gear of the second planetary gear set (P4) is connected to the fourth shaft (4) which can be coupled via a second brake (04) to a housing (G) of the transmission, wherein the internal gear of the third planetary gear set (P3) is connected to a housing (G) of the transmission, wherein the drive output shaft (2) can be releasably connected via a fourth clutch (28) to the eighth shaft (8), which is connected to the web of the third planetary gear set (P3), and via a third clutch (27) to the seventh shaft (7), which is connected to the internal gear of the fourth planetary gear set (P4), and wherein the first planetary gear set (P1) can be blocked by virtue of a first clutch (13, 36) being closed.
  2. Multi-stage transmission according to Claim 1, characterized in that the first clutch is in the form of a clutch (13) which releasably connects the third shaft (3) to the drive input shaft (1) or is in the form of a clutch (36) which releasably connects the third shaft (3) to the sixth shaft (6).
  3. Multi-stage transmission according to Claim 1 or 2, characterized in that the planetary gear sets (P1, P2, P3, P4) are in the form of minus planetary gear sets.
  4. Multi-stage transmission according to Claim 2 or 3, characterized in that the first forward gear is realized by closing the second brake (04) and the second and fourth clutches (35, 28), the second forward gear is realized by closing the first, second and fourth clutches (13 or 36, 35, 28), the third forward gear is realized by closing the second brake (04) and the first and fourth clutches (13 or 36, 28), the fourth forward gear is realized by closing the second brake (04) and the third and fourth clutches (27, 28), the fifth forward gear is realized by closing the second brake (04) and the first and third clutches (13 or 36, 27), the sixth forward gear is realized by closing the first, second and third clutches (13 or 36, 35, 27), the seventh forward gear is realized by closing the second brake (04) and the second and third clutches (35, 27), the eighth forward gear is realized by closing the first brake (03) and the second and third clutches (35, 27), and in that the ninth forward gear is realized by closing the first and second brakes (03, 04) and the third clutch (27), wherein the reverse gear is realized by closing the first and second brakes (03, 04) and the fourth clutch (28).
EP20100745233 2009-08-20 2010-08-19 Multi-ratio transmission Not-in-force EP2467618B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE102009028709A DE102009028709A1 (en) 2009-08-20 2009-08-20 Multi-speed transmission
PCT/EP2010/062129 WO2011020897A1 (en) 2009-08-20 2010-08-19 Multi-ratio transmission

Publications (2)

Publication Number Publication Date
EP2467618A1 EP2467618A1 (en) 2012-06-27
EP2467618B1 true EP2467618B1 (en) 2014-12-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100745233 Not-in-force EP2467618B1 (en) 2009-08-20 2010-08-19 Multi-ratio transmission

Country Status (4)

Country Link
US (1) US8663056B2 (en)
EP (1) EP2467618B1 (en)
DE (1) DE102009028709A1 (en)
WO (1) WO2011020897A1 (en)

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US20120115672A1 (en) 2012-05-10
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US8663056B2 (en) 2014-03-04

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